Why does Quark ask Morn to help him set up the vole fighting? Given how talkative Morn is, word was bound to slip out!

Factoid :

This is the second Mirror universe episode.

Plotline

When O'Brien pulls a phaser on Sisko and forces him to beam off DS9, the Commander quickly realises that he has been taken to the Mirror universe Kira and Bashir briefly visited in "Crossover". The Terran Rebellion is not faring well against the Klingon/Cardassian Alliance, and their fate will shortly be sealed when a new sensor array is completed by an alliance scientist - one Jennifer Sisko...